document.write( "Question 849878: How many 4-letter codes can be formed using the first 10 letters of English alpha bets, if no letter can be repeated? \n" ); document.write( "
Algebra.Com's Answer #511799 by stanbon(75887)\"\" \"About 
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How many 4-letter codes can be formed using the first 10 letters of English alpha bets, if no letter can be repeated?
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\n" ); document.write( "Ans: 10*9*8*7 = 10P4 = 5040
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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